after a week of thinking what i can build or modify and ultimately use in a classroom setting, i have come up with nothing! I always find these types of assignments difficult. one DIY project that has caught my attention was a do it yourself video on making an air conditioner! i love the idea and that it’s simple to build. though it might not have a purpose for teaching a subject or topic, it can be useful for those nasty hot days your teaching in a class that has no A/C and no air coming in through the windows! i remember when i was in junior high and high school having to learn in a classroom that was unbearably hot because their was never in A/C or fan in the room. I could not learn anything, all i did was look at the clock and hoped for time to fly by. my thing is you can carry it and leave it in the classroom and hook it up whenever your students complain about the heat, just set it up in the back of the classroom. It will make your day more pleasant and your students will give you thier undivided attention, hopefully! I will post up my video figuring it out soon!